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Interaction between aluminium ions and organic ligands in acidified hydrosphere of ecosystem

Research Project

Project/Area Number 08680579
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境影響評価(含放射線生物学)
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

YOKOYAMA Takushi  Kyushu University, Faculty of Science, Associate professor, 理学部, 助教授 (20136419)

Co-Investigator(Kenkyū-buntansha) NODA Kaori  Hirosaki University, Faculty of Science, Associate proffesor, 理学部, 助教授 (10281198)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
KeywordsAluminium / Toxicity / Acid rain / Acidification of soil / Hydrosphere / Humic acid / Fulvic acid / Functional group / 植物毒 / アルミニウムイオン / カルボキシル基 / フェノール性水酸基 / アルミニウム-フルボ酸錯体
Research Abstract

The acid precipitates have been acidyfying soil. The acidification can make aluminium in soils dissolve in hydrosphere such as soil water, groundwater, river water, lake water etc., of the buffer capacity for acid exceeds a certain limit. When present in high amount, aqua aluminium ion exhibits toxic effects against plants. The species that have generally been considered more toxic are the monomers such as Al(H_2O)_6^<3+>, Al(H_2O)_5OH^<2+> and Al(H_2O)_4(OH)_2^+. However, aluminium complexes with organic ligands are less phtotoxic than the aquaaluminium ion and its hydrolytic products. Therefore, a detailed understanding of the aluminium binding properties of organic ligands has particularimportance for umderstanding the phytotoxicity of aluminium.
In this study, the interaction between aluminium ion and some organic ligands (iminodiacetic acid, quinolic acid, tiron, salicylic acid, phthalic acid, chelex-100 and Bio-Rad cation exchange resins) ware investigated by ^<13>C and ^<27>Al NMR.It was found that the complex formation for aluminium ion with the organic ligands under acidic conditions strongly depended on the chelate effect. In other words, monodatate complexes were not formed but chelate complexes were preferably formed. Moreover, the stability of the chelate complexes was in order 5>6>7 membered rings.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 横山 拓史: "^<27>Al and ^<31>P NMR Study on the formation of Al-NTA-(phosphate)_n(n=1or2)complexes in aqueous solution" Analytical Science. (印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 広城 吉成: "陽イオン交換容量の空間分布を考慮した不撹乱土壌中" 土木学会論文集. No.579. 15-27 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 横山 拓史: "^<13>C and ^<27>Al NMR study on the interaction in acidic aqueous Solution between aluminiumion and tiron,salicylic acid,and phthalic acidi as model compoundo with functional groups" Analytical Science. 13. 425-428 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takushi Yokoyama: "^<27>Al and ^<31>P NMR study on the formation of Al-NTA-(Phosphate)^n(n=1 or 2) complexes im aqueous solution" Analytical Science. (in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yoshinari Hiroshiro: "Cation transport in undisturbed soil with spatial distribution of cation exchange capacity" Dobokugaku-Ronbunshu. No.579. 15-27 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takushi Yokoyama: "^<13>C and ^<27>Al NMR study on the interaction in acidic aqueous solution between aluminium ion and tiron, salicylic acid, and phthalic acid : as model compounds with functional groups" Analytical Science. 13. 425-428 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 横山拓史: "^<27>Al and ^<31>P NMR study on the formation of Al-NTA-(phosphate)_n(n=1or2)complexes in aqueous solution" Analytical Science. (印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 広城吉成: "陽イオン交換容量の空間分布を考慮した不撹乱土壌中の陽イオン輸送解析" 土木学会論文集. No.579. 15-27 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 横山拓史: "^<13>C and ^<27>Al NMR study on the interaction in acidic aquecus solution between aluminium ion and tiron,salicylic acid,and phthalic acid:as model compounds with functional groups" Analytical Science. 13. 425-428 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 広城吉成他: "農地利用形態の変化に伴う地下水中硝酸態窒素濃度及び溶存酸素量の変化" 地下水学会誌. 38. 1-11 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 池田好夫他: "ムライト前駆体中のアルミニウムの配位数分析:XAFSと27AlMASNMR法との比較" X線分析の進歩. 27. 211-219 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 横山拓史他: "Determination of gold in geothermal water by anion exchange and ICP-MS" Geochemical Journal. 30. 183-187 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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